Typewriting machine



Aug. 28, 1928.

1,682,333 F. A. HART v TYPEWRITING MACHINE Filed Aug. 8, 1925 4sheets-sheet 1 iE-l WITNESSES v INVENTOR. J Q'M W 7h, BY v 55/44 ATTORNEY Aug. 28, 1928.

F. A. HART TYPEWRITING MACHINE Filed Aug. 8. 1925 4 sheets-sheet 2WITNESSES A TTORNEY Aug. 28, 1928. 1,682,333

F. A. HART TYPEWRITING MACHINE Filed 'Aug. 8, 1925 4 Sheets-Sheet 3'WITNESSES v INVENTOR.

v 2am W Wwfi ATTORNEY Aug. 28, 1928.

F. A. HART TYPEWRITING MACHINE Filed Aug. 8, 1925 4 Sheets-Sheet IN VENTOR.

A TTORNEY Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE.

FREDERICK A. HART, OF NEW BRITAIN,

CONNECTICUT, ASSIGNOR TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEWYORK, A CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed August 8, 1925. Serial No. 48,992.

My invention relates to ribbon mechanism for typewriting machines andmore particularly to mechanism for feeding and controlling a ribbonmounted on the traveling carriage of the machine and intended primarilyto supplement the main vibratory ribbon.

The chief object of the invention is to provide new and improvedmechanism for feeding and controlling such a ribbon and whlch is usuallycalled a carriage-carried ribbon.

' To the above and other ends which will hereinafter appear my inventionconsists in the features of construction, combinations of devices, andarrangements of parts hereinafter described and particularly pointed outin the claims.

In carrying out my invention in the present instance I prefer to makeuse, as a support for the carriage-carried ribbons, of the paper bail ofthe Remington bookkeeping machine to which my invention is shown asapplied. The ribbon which is endless is stretched around four guides atthe four corners of a rectangle, these guides being mounted on the paperbail and one of them being spring pressed to tension the ribbon, thetensioning guide being adapted tobe held out of normal position whendesired so that the ribbon may readily be removed and replaced. Theribbon inclines downward from front to rear so that the rearply orportion which stretches lengthwise of and over the printing line. on theplaten is at a slight angle to the vertical. To correct this, springfingers are provided on the bail frame which press down on the ribbonand hold it in a vertical or substantially vertical position conformingto the platen surface. The endless ribbon is fed by gripping jawsmounted 'on a feed slide which 'is connected with the regularline-spacing mechanism so that when the line spacing mechanism isactuated the gripping jaws pull from left to right to advance the ribbonstep by step, but relax to slide over the ribbon inoperatively on thereturn movement from right to left. The line spacing mechanism may beactuated both by hand and also electrically, so'that dual meansareprovided for actuating the carriage-carried ribbon.

The carriage-carried or supplementary ribbon mechanism while it may beemplo ed in various ways within the scope of t e in vention wasprimarilydesigned for use in writing a check record simultaneously withthe writing on the face of the check proper by means of the regularvibratory ribbon. One or more columns on the check record arecustomarily left blank and to provide for this the endless ribbon isautomatically raised above the printing line by cam devices at apredetermined point in the carriage travel. The cam is mounted on astationary part and co-operates with a roller carried by a projection orarm fixed to and extending from the rock shaft of the paper bail in sucha way as to swing the bail upward on its pivots, thus raising the ribbonguides and the rib bon automatically when the carriage reaches apredetermined point in its travel from right to left. During returnmovements the roller rides over the cam and depresses it, the cam beingspring mounted for this purpose, the result being that the ribbon is notlifted during these return movements, unnecessary work being thusavoided. A key is provided in association with the roller mounting,which key is effective to depress the cam at will so that when, assometimes happens, it is desired to write in'the blank column orcolumns, the cam may be rendered inoperative during leftward travel ofthe carriage.

In the foregoing construction whenever the ribbon is lifted to clear theprintin line the paper bail will be swung upward. It may be preferred tohave the bail independent of or unaffected by the lifting of the ribbonand for this purpose I have provided a modified construction wherein asub-bail remains engaged with the platen when the ribbon bail or carrieris swung up ordinarily; although a greater degree of movement of theribbon ail will be transmitted to the sub-bail.

My invention will be described in detail in connection with theaccompanying drawings, wherein Figure 1 is a fragmentary plan view ofthe carriage of a Remington bookkeeping machine embodying my invention.

Figure 2 is a vertical sectional view taken 7 transversely of saidcarriage, part of the carriage mounting also being shown.

Figure 3 is a view corresponding to Fig.

2 but omitting some of the parts illustrated therein and showing otherparts in different relation.

Figure 4 is a vertical sectional view taken on the section line 11 inFig. 1 and looking in the direction of the arrows at said line, saidFigure 4 being drawn to an enlarged scale and illustrating one of thespring guide fingers in operative position.

Figure 5 is a view corresponding to Fig. 4 but showing the guide fingerthrown up or lifted.

Figure 6 is a sectional view taken longitudinally of the axis of one ofthe spring fingers.

Figure 7 is an enlarged fragmentary vertical sectional view taken on aplane designated by the section line 22 in Fig. 1 and looking in thedirection of the arows at said line.

Figure 8 is a view showing the detent devices of Fig. 7 interseated.

Figure 9 is a perspective view of the roller or cam device and itscarrier together with the key for depressing the associate cam device orplate at will.

Figure 10 is a perspective view of the feed slide and associate parts.

Figure 11 is a fragmentary plan view of a modification, and

Figure 12 is a fragmentary end view of the modification.

" Referring first to Figs. 1 and 2, the main frame of the Remingtonmachine comprises as shown a top plate 1 from which rise lugs 2 thatsupport front and rear guide rails 3 and 4. Said guide rails are formedwith oppositely facing grooves which receive anti-friction rollers 5that likewise co-operate with the grooved front and rear bars 6 and 7 ofa rectangular carriage truck that further comprises end bars 8connecting the front and rear bars 6 and 7. In addition to the truck thetraveling carriage of the Remington typewriting machine comprises acarriage frame which includes end bars 9 having extensions 10 connectedby a cross rod 11. The end bars support axle portions .12 on which ismounted a rotary cylindrical plate 13. The platen frame comprising thebars 9 isadapted to be shifted on the truck to-alter the position of theplaten and change case, but in the instance of the Remington bookkeepingmachine the platen frame is preferably secured infixed relationship withthe truck and does not shift thereon. Operatively connected to theright-hand end of the platen 13 is a line spacing ratchet wheel 14 withwhich cooperates a line spacing pawl 15 pivoted at 16 to a carrier 17mounted to swing co-axially with the platen. The pawl 15 is connected bya link 18 with one arm of a bell crank 19 that is pivoted at 20 to therighthand end bar 8. The other arm of the bell mentary crank 19 isconnected by a wire link 21 with a crank arm 22 that is secured by ascrew 23 to the rear end of a rock shaft 24, said rock shaft extendingforwardly and having a bent-down handle or finger piece 25. The 'rockshaft 24 is pivotally supported in the parallel cars 26 of a suppleendbar or casting 26 that is detachably, fixed to the righthand end bar 8.The rear end portion of the rock shaft 24 is surrounded by a coiledrestoring spring 24 which is covered or housed by a tube 27 thatsurounds the rock shaft between the bearing cars 26", said tube beingsecured in fixed relationship with the rock shaft by a screw 27, so thattube and shaft always turn together. During ordinary line spacingoperations an actuation of the handle 25 will rock the shaft 24, andswing down the crank arm 22, this motion being transmitted through thelink 21 to the bell crank 19 and thereby through the link 18 to thecarrier 17 and pawl 15, causing the pawl to co-operate with the ratchetwheel 14 in the usual manner to turn the platen through a unit of linespacing distance. Between line spacing operations the platen is heldagainst accidental turning movements by detent devices comprising aroller detent 28 which co-operates with the teeth of the ratchet wheel14, said detent being mounted at the free-end of a spring arm 29 that issecured by a screw 30 to the under face of a lug 31 on the rod 11.

In addition to the hand actuated devices comprising the rock shaft 24and its connections for operating the pawl and ratchet devices 1514,.Ipreferably also employ for actuating the said pawl and ratchet deviceselectrical means of the character fully disclosed and claimed in myprior application filed Feb. 6, 1925, Sr. No. 7,213. A brief descriptionof said means will be given in connection with Fig. 2, wherein certainof the parts are diagrammatically illustrated. The electricalline-spacing means comprises an electric motor 32, which is connected byshafting 33 with a bevel gear 34 that intermeshes with a larger bevelgear 35 secured to the lower end of a vertical shaft 36, carrying at isupper end a gear 37 which meshes with a toothed bar or rack 38 that isarranged at the under side of the rear bar 7 of the carriage truck, fromwhich it is sup ported by headed screws 39. These screws pass freelythrough slots or elongated holes in the rack and are threaded into thebar 7, the mounting being such as to allow of a slight independentendwise movement of the rack 38 before it starts to drive or transmitmovement to the carriage from the motor. A vertical shaft 40 is mountedon a bracket .41 secured to the right-hand cnd bar of the carriage, saidshaft having at its lower end a crank arm 42 which lies in the path ofthe rack 38 and is adapted to be engaged by the right-hand end thereof.At is upper end the shaft 40 carries a leftwardly extending arm or crank43 having a pin 44 which stands in the path of a lug or ear 45 bent olfhorizontally from a bar 46, the forward end of which is pivotallyconnected at 47 to the bell crank 19. The rear end of the bar 46 isformed with a guide slot 48 'which engages a screw pin 49 that bridgesaguide slot formed in an upward extension 31 of the lug 31, the rear endportion of the bar 46 being guided in this slotted extension. When theelectrical connection is made at the end of a line, motion istransmitted through the describd train of connections comprising theshaft' 36, gear 37,

rack 38, arm 42, shaft 40, arm 43 and pin 44 to the bar 46, whichactuates the bell crank 19, causing it to transmit movement through thelink 18 to the pawl 15 and thence to the ratchet wheel and platen aswhen the pawl is actuated by hand. The parts of the electrical train arerestored by a spring 50. Thus there are provided dual means foralternatively actuating the pawl-and-ratchet linespacing mechanism.Under actuation of the handle 25 the electrical train other than the bar46 is not aflected.

LThe usual vibrating ribbon mechanism is employed comprising. (Figs. 1and 2) a vibratory ribbon carrier or vibrator 51 mounted to vibrate upand down on the center guide 52. The main ribbon 53 which is threadedthrough the vibrator 51 is adapted to be fed back and forth and reversedas is usual. It will be understood that at each actuation of the typebars, not-shown, the ribbon 53 which normally is maintained below theprinting line on the platen will be automatically lifted into the pathof the on-coming type which will strike through the ribbon to make animprint on the work sheet or paper that is immediately behind it.

To support the supplementary. or carriagecarried ribbon mechanism towhich my invention especially relates,.I make use of the papercontrolling hail of the machine which will be briefly described. Securedto the front bar 6 of the carriage truck is a scale bar 54 at the endsof which are mounted angled brackets 55, the vertical rearwardlyprojecting portions whereof are formed with hubs 56 that are perforatedto provide bearings for a bail rock shaft 57. The end portions of therock shaft project outwardly beyond its bearings and have secured tothem side arms 58 which extend rearward and upward, terminatingin'horn-like portions 58 which are connected by a cross rod 59 on whichare adjustably mounted the usual rolls 60 that co-operate with the frontupper portion of the platen above the printing line thereon. It will beunderstood that the paper bail is a rigid rectangular frame, comprisingthe rock shaft 57, the bail arms 58 and the cross rod 59, which may beswung or rocked about the axis of the shaft 57 to throw the bail intoand out of use.

The supplementary or carriage-carried ribbon 61 (Figs. 15) is mounted orsupported wholly on the paper bail. The ribbon 61 is preferably endless,it having been found in practice that a very large number of copiescomprising several days work may be printed from such a 'ribbon beforeit becomes exhausted. The ribbon 61 is rectangularly disposed and guidedor supported on four guides, arranged in pairs disposed at oppositesides of the bail. The guides may be of any desired construction and asherein shown are in the form of headed pins 62. The pair of guide pins62 at the lefthand side are riveted or otherwise secured to cars 63projecting horizontally inward from the left-hand side arm 58 at itsunder side. The right-hand pair of guide pins 62 are supported on asingle ear or led e 64 projecting inward from the under side of theright-hand side arm 58. The rear pin 62 is riveted to the ledge 64similarly to the lefthand pair of pins. The forward pin 62 of theright-hand pair is however movably supported for the purpose ofmaintaining a constant tension on the ribbon and also for facilitatingits adjustment. The movable mounting is clearly shown in Figs. 1-3, 7and 8. The said pin 62 is riveted or otherwise fixed to the free end ofan arm 65, said arm extending rearward and terminating in anenlargement, at the left side of which is an upstanding stop lug 66. Theupper face of the rear end portion of the arm 65 is formed with aplurality of bosses or projections 67, preferably four in number, andsaid rear end portion is perforated to pivotally fit over a headedshouldered screw 68 which is threaded upward through the ledge 64 andfixed in place by a nut 69. The arm 65 is constantly pressed upward by aspring coiled around the body portion of the screw 68 and confinedbetween the under side of the arm 65 and the head of the screw. Saidspring normally maintains the bosses 67 in contact with the under faceof the led e 64. Also the lower end of the spring 70 is anchored to thehead of the screw 68 while the opposite end of said spring is hookedover the left-hand edge of the arm 65 and constantly tends to swing saidarm rightward about its pivot 68, thus maintaining a constant springtension on the arm. 65 and its in 62, this tension being transmitted bysaid pin to the endless ribbon 61. In. order to relieve the ribbon oftension so that it may be adjusted or removed and replaced by a freshribbon the arm 65 maybe swung on its pivot leftward to the dotted lineposition shown in Fig. 1,

leftward movement being limited by the engagement of the stop 66 withthe left-hand edge of the ledge 64: back of the pivot 68. The under faceof the ledge 64: is provided with four depressions 71 to which thebosses 67 are adapted when the arm has been swung outward to the dottedline position. As soon as the bosses register with their seats ordepressions 71 they will be forced to en gage therewith by the upwardpressure of the spring 70, the construction being such that the arm ismaintained locked off in the dotted line position by the detent devices67, 71. A slight forward pull on the arm will unseat the bosses andenable the spring to swing it forward and rightward to the normaltensioning position. It will be observed that the spring 70 performs twofunctions, acting on the arm to swing it about its pivot and maintain itunder tension, and also pressing said arm upward so as to render thedetent devices effective to lock ofi' the arm when it is swung to theleft. As a result of keeping the ribbon 61 under tension its rear lengthor ply will be maintained taut and in a straight line extendinglengthwise of the platen and opposite the printing line thereon. Thisprinting ply of thev ribbon extends substantially the full length of theplaten and it will be noticed that the rear guides 62 are so disposedthat said ply is located behind the printing portion of the vibratoryribbon 53. i

The side arms 58 of the paper controlling bail incline downward fromfront to rear and this results in the rear ribbon guides 62 being lowerthan the front guides, and in all of the guides being at an inclinationto the vertical, as will be clearly understood from Fig. 2. As aconsequence the printing ply of the ribbon passing over the inclinedrear guides tends to follow their inclination and stand away from theface of the platen at its lower edge portion. To remedy this defect andcause the printing ply of the ribbon to lie substantially vertically andconform more or less closely with the platen surface, there are providedsupplementary spring pressed guides as shown in Figs. 1-5. There are 7two of these guides pivotally mounted on the rod 59 andarranged nearopposite ends thereof. Each of the supplementary guides comprises afinger-like portion 72 curved generally to conform to the surface of theplaten and provided at its top with an outwardly extending hub portion73 which fits over the rod 59. Each guide finger 72, 73 is looselyconfined between an enlargement 74 on the end of the rod 59 and a collar75 provided with a hub or flange 76 which receives a set screw 77whereby the collar is secured to the rod 59. Surrounding each collar 75is a coiled spring 78, one end of which is anchored to the associate hub76 and the other end hooked neaasae over the guide finger 72. The springpresses the guide device constantly towards the platen, maintaining itin engagement with the printing ply of the ribbonwhich is therebyconfined between the platen and the rear edge of the finger 72, with theresult that said ply is held contiguous to the platen throughout itswidth. There being one of these guides near each end of the printingply, the whole length of the ply is thus controlled. The spring 78associated with each guide finger 72, 73 also tends to press said guidefinger outward and to maintain its hub 73 engaged with the inner face ofthe enlargement 74. This enlargement is provided with an inwardlaterally extending pin'79 which is adapted to play in a cutout 80 inthe hub 73 when the finger is turned or swung upward. In addition to thecutout 80 the hub 73 is formed with a shorter cutout 81 which isseparated from the cutout 80 by a closed portion 82. When it is desiredto relieve the printing ply of the ribbon from the control of the guides72-73 they may be swung upward from the position shown in Figs. 2 and 4:to that shown in Fig. 5. As each finger is swung upward the forwardinclined end of the cutout 80 will encounter the pin 79 and will therebybe cammed, inward against the pressure of its spring 78, forcing theclosed portion 82 to slide or scrape over the pin. As soon as thisportion clears the pin the finger will snap outward causing the openingor slot 81 to engage the pin, the two co-operating to act as detents andhold the guide finger 72,

73 in inoperative position. By pulling forward on the finger the reverseoperation takes place and it is caused again to engage in spring pressedrelationship with the rib bon ply.

Referring to the operation of introducing and feeding the paper, therecord sheet, such as shown in Fig. 2 and numbered 83, is introduced atthe rear of the machine and fed around the platen in the usual way,passing under the front feed roller 84 upward behind the printing pl ofthe ribbon 61 and thence beneath the ail rollers 60. The bill sheets arefront-fed and are introduced into the machine behind the line gage andpaper guide (not shown) and forward of the printing ply of the ribbon61. As appears from F1g. 1, each bill sheet, 85, is so introduced thatit lies between the two ribbons. being behind the vibratory ribbon 53but forward of the supplemental ribbon 61. During printing operationsthe bill sheet 85 will receive imprints on its front face through theribbon 53, these imprints being duplicated on the record sheet 83through the ribbon 61. The ribbon 61 will also oil'- set on the back ofthe bill sheet 85, a not undesirable feature in the present instancewhere the bill sheet is a check.

As each line is written on the check or bill sheet it will be printedthrough the printing ply of the supplementary ribbon 61 which willtravel with the platen during its letter spacing movements, thelongitudinal relationship between the platen and the printing ply of theribbon not being altered during the whole line-printing operation. Inother words, the printing ply of the ribbon at the beginning of a lineremains unchanged throughout the writing of the line and until it isfully completed. In order to exhaust the ribbon 61 evenly and prolongits life, it is desirable to feed or advance it longitudinally aftereach line of writing, and to this end means are provided for feeding theribbon automatically when the platen is line spaced or turned betweenthe lines of writing. The feeding means comprises a sliding element orfeed slide shown in Figsl and 10 and designated as" a whole by thereference numeral 86. The feed slide 86 comprises a sleeve or hubportion 87 and an integral body or block portion 88 from which projectsrearwardly a shelf or lip-like portion 89 whose face is separated fromthe block proper by a slotway 90. The feed slide or device 86 is mountedon the bail rock shaft 57, the sleeve 87 being perforated to fitslidably on the rock shaft. The inner end of the sleeve is formed withdiametrically opposite slots 91 which engage'with the projecting endportions of a cross pin 92 that passes through the rock shaft 57. Thereis afiorded a limited sliding movement of the feed slide on the rockshaft while when the rock shaft is turned or rocked the feed slide isforced to articipate in this rocking movement. fii oted on the ledge 89by a headed screw pin 98, which projects upward therefrom, is a grippingdevice or jaw 94, the working face whereof is roughened or corrugated asiiidicated at 95, said face co-acting with the rear vertical face 96 ofthe block 88. The

front ply of the ribbon 61 is adapted to pass between th jaws, beingguided at its lower edge portion through the slot 90. A wire spring 97is coiled around a pin 98 which projects upward from the ledge 89, saidspring acting against the pivoted feed jaw 94 to press it constantlytowards the coacting jaw 88, 96. The arts are so related that when thefeed sli e 86 is moved leftward the jaws 94, 95 and 88, 96 will bemaintained in sprin pressed clamping engagement with the front ply ofthe IlbbOn and will force the ribbon to participate in rightwardmovements communicated to the feed slide, whereas during returnmovements the spring pressure will relax and the feed jaws will slideidly back over the ribbon which will remain stationary. The feed slideis constantly pressed towards the left by a coiled restoring spring 99which surrounds the rock shaft 57 and is cohfined between the end of theslide and a collar 100 which is secured by a set screw 101 to the rockshaft 57 (Fig. 1). The set screw 101 engages at its point in a groove102 which is cut longitudinally in the rock shaft 57.

Means for connecting the feed slide with the line spacing mechanismcomprises, as shown in Figs. 1 and 10, a fork 103 which loosely engageswith the rock shaft 57 to the left of the feed slide and is adapted toengage with the left-hand face thereof.

The fork is confined between the feed slide 7 and the left-hand hub 56,the spring 99 normally maintaining the slide in contact with the fork103 and the fork in contact with the hub. The fork 103 is provided witha hub portion 104- which fits over the left-hand end portion of a sliderod or link 105 and is secured thereto by a set screw 106. The rod 105bears slidably in holes formed in the upright portions of the an gularbrackets 55 forward of and above the rock shaft 57. At its right-handend the slide rod 105 is offset or angularly bent as indicated at 107 toengage rotatively in a hole or opening formed in the free end of a crankarm 108 having a hub portion 109. The crank arm is split so that it maybe fitted readily over the tube or shell 27 and is in sheet a splitcollar, it being clamped or secured in fixed relationship to said tubeby a clamping screw 110 which bridges the split in the crank arm andconnects the two portions or plies thereof. When the screw issnficiently tightened the crank 108, 109 is secured fiigedly on thesleeve and is compelled to rotate therewith. Such rotation of courseoccurs when the line spacing mechanism is actuated, either by the handle25 or from the motor 38. At such line spa-1c ing operation the turningmovement communicated to the rock shaft 2% and the tube 27 will betransmitted through the crank arm 108, 109 to the slide rod 105 andthence through the fork 103 the feed slide 88, which will he slidrightward along the shaft 57, compressing the spring 99 and causing thegripping jaws or faces 95 and 96, which are in spring pressed engagementwith the front ply of the ribbon pull it rightward. As a consequence theendless ribbon will be moved slightly throughout its length, the frontply moving longitudinally towards the right and the rear or printing plymoving correspondingly towards the leftand relatively to the platen. Onthe completion of the line spacing operation the ribbon feeding deviceswill be restored by the spring 99, the gripping jaws sliding idly overthe ribbon. Thus theribbon will be automatically fed or advanced a.short distance longitudinally at each line spacing actuation.

As stated, it is sometimes desirable to leave blank one or more of thecolumnar spaces on the record sheet 83. To this end adjustable means areprovided for automatically lifting the printing ply of the ribbon 61 sothat it will be raised out of the path of the printing types and will beineffective so long as thus maintained. The automatic means for thispurpose comprise a cam plate 111 which at its right-hand edge is formedwith an incline or cam 112 and at its lefthand rear portion is split toprovide a downwardly inclined cam portion 113 (Figs. 1-3) The cam plate111 is hinged onscrew pivot pins 114 which project inward from ears 115formed at the sides of and extending rearward from a supporting plate116 that is secured at the under side of the front rail 3. The plate 116has elongated holes or slotways 117 which receive headed securing screws118 that are threaded up into the rail and thus adjustably secure theplate 116' thereto. A leaf-spring 119-is secured to the under face ofthe plate 116 by screws 120, the free end of said spring extendingrearward and contaetively engaging with the underface of the hinged camplate 111, which plate it tends to maintain in the normal upwardlyinclined position shown in Figs. 2 and 3, and against a stop plate 121secured to the upper face of the plate 116. Co-operative with the: camplate is a roller 122, said roller being pivoted on a roller carrierillustrated in Figs. 1-3 and 9 and comprising a hub or sleeve portion123 and an arm 124 which is bent off from the hub and extendslongitudinally rightward therefrom, carrying at its free end the pivotedroller 122. The roller carrier is adj ustably secured to the rock shaft57, the hub 123 fitting over said rock shaft and receiving set screws125 which engage in the groove 102, thus insuring the proper position ofthe roller carrier for all adjustments. The roller and its carrier arein effect a projecting device from the rock shaft. Associated with theroller carrier is a spring plunger 126 provided with a key or fingerpiece 127 and surrounded by a coiled spring 128 which is housed in adepression 129 formed in a block or plunger carrier 130, said plungercarrier fitting over the rock shaft 57 and being maintained insubstantially unvarying normal relationship with the roller 122 and itssupport or carrier, 123, 124:. To this end a spacing sleeve 131 isinterposed between the plunger carrier 130 and the roller carrier,preventing displacement of the plunger carrier lengthwise of the shaft57 in one direction or towards the left. Rightward displacement of theplunger carrier on the shaft is prevented by a collar 132 which is fixedto the shaft by a set screw 133. To reset the projecting device (i. e.the roller and itscarrier) and the plunger, it is necessary to loosenthe screws 125 and the screw 133, so the parts may be adjusted together.Part 130 is undercut to rest on bar 54:, preventing forward rotation.

The cam devices comprising the plate 111, the roller 122 and itscarrier, together with the plunger 126, 127, are so related or adjustedthat they may be brought into co-operation whenever the column on therecord sheet that is to be left blank comes opposite the printing pointduring the leftward movements of the carriage. The adjustments are suchthat at this time the roller 122 will contactively engage with the camedge 112 of the cam plate as shown in Fig. 1. Thereafter as leftwardmovement of the carriage continues, the roller will ride up on the camand, since its support 124 is in the nature of a crank, will as aconsequence turn the rock shaft 57 in its bearings, thus lifting thepaper bail and the ribbon guides and ribbon that are mounted thereon,carrying the ribbon to an inoperative position. The parts in theirraised or lifted inoperative position are illustrated in Fig. 3, fromwhich it will be observed that the carriage-carried ribbon has beenraised above the printing point on the platen indicated by the crossline p. The ribbon will be held in its raised inoperative position asthe carriage travel continues towards the left, until the roller 122clears the rear straight edge of the cam plate 111 when the paper bailand the ribbon guides and ribbon will drop down again to the normal orFig. 1 position. During return movements of the carriage the roller 122will contact with the downwardly bent cam portion 113 and will depressthe cam plate 111 swinging it downward on its pivots 114 against thespring 119 to the dotted line position in Fig. 3. As a result the camplate is automatically rendered ineffective and the bail and ribbonmechanismwill not be disturbed during the return movement ofthecarriage.

At times it may be desirable to print in the blank column or columns onthe record sheet, and to this end the cam devices 111, 122 mayberendered ineffective during leftward travel ofthe carriage by means ofthe spring plunger device 126, 127. At such times when the carriagemovement brings the cam devices into the relationship shown in Fig. 1 itis only necessary to press the key 127, lowering the plunger 126 againstits spring and causing its point, acting againstthe top face of the camplate 111,

to swing it downward against the pressure of its spring 119 to thedotted line position of Fig. 3. In this position it is clear of the pathof the roller 122 sotliat as the roller travels leftward it willnot beaffected by the cam plate. It will be apparent thatv as soon as therollerv has passed the righthand end portion of the cam plate theplunger may be released, since then the cam can only swing upward untilit contacts with the bottom face of the roller which will Cir nesaaasthereafter slide ineflectively over the upper face of the cam plateuntil it clears it.

In the described construction illustrated in Figs. 1-10 the paper bailand the ribbon guiding devices as a whole are not relatively movable inrespect to each other. As a result whenever the printing ply. or workingface of the ribbon 61 is displaced or lifted from the printing face ofthe platen the bail must also be lifted, causing the bail rolls 60 toseparate from the platen. Sometimes this may be inconvenient orundesirable since it frees the upper portion of the work sheet or recordsheet 83 from control. Accordingly l have provided a modifiedconstruction illustrated in Figs. 11 and 12 wherein the supplementaryribbon may be lifted or shifted to clear or uncover the printing linewithout freeing the paper from control. In the Figs. 11-12 modificationthe paper con-= trolling bail itself is of the same construction asusual, and as illustrated in Figs. l1(l and described hereinbefore,except that in stead or" two bail rolls 60 only one is em ployed, thissingle roll 60 being located at. the middle of the roll rod or bar 59.Also the ribbon feeding, guiding and controlling devices are the same inthe modification as in the first described construction and have beengiven the corresponding numbers, so that it is not deemed necessary todescribe them in detail or explain their mode of oper-=- ation. Whereinthe modification" difiers from the first described construction is priinarily in the provision of an addition or supplemental papercontrolling device or loail which is mounted on the main or regu larpaper bail device. The supplemental bail comprises side arms 13% and aconnect= ing' cross rod 135 on which are mounted pair of pressure rolls136, these being spaced or adjusted near the ends of the rod 135 so theroll 60 on the other bail is about midway between and forward of them.The sub-hail 18 1 ispivoted on the main bail by means of headedshouldered rivets 13?. These pivots or rivets are secured in the sidearms 58, and the bail arms 134 are properly spaced from the arms 58 byspacing washers or sleeves 138 and 139 which are interposed between thesaid arms and supported on the shanks of the rivets 137. The twospringdevices lie and act in lines parallelwith the planes of movement of thebail arms. The efi'ect of the springs is constantly ,to tend todraw thebails together scissorswise about their pivotal connections 137. Theconstruction is such that when the main bail together with the ribbonguides and the ribbon 61 supported thereon are lifted or cammed upwardby the cam devices 122, 111, as. shown by dotted lines in Fig. 12, thesubbail 134, 135 will not,be substantially afiected and its rolls 136will remain in operative contact with the top of the platen, Also ofcourse the sub-bail will remain quiescent when the main bail and theribbon mechanism return to normal position. Thus, means are provided forcontrolling the work sheet constantly above the printing line of: theplaten while permitting the ribbon 61. and its supporting devices andcontrolling mechanism to be moved u and down or out of and back tooperative relationship with the platen. In order however that thesub-bail may be lifted with the main bail when it is desired to clearthe platen for paper adjustments or other purposes, contact pins 143 aresecured to the bail side arms 58 and project laterally outward therefrominto the plane of the arms 1% and" so that it the main bail is swungupward, and tor ward for the purpose of clearing the platen, the pins143 engaging with the under edges of the arms 134 will swing thesub-bail automatically upward and forward bodily away from the platenaround the pivotal axis 57 of the main bail.

My invention, while comparatively simple till lid

llld

andinexpensive and readily applicable to the machine, has proven highlyeificient in practical operation.

Various changes besides those specified may be made without departingitrmn the invention, and its principles in whole or in part may beeasily adapted to styles of writing machines other than that shownherein.

What ll claim as new and desire to secure by Letters Patent is 1. in atypewriting machine, the com- A bination of a carriage, a platenthereon, a paper bail controlling the paper through the length of theplaten, said bail being movaloly mounted on said carriage and'co-operatrve' with the platen, a carriage carried inking ribbon whollysupported on said movable paper bail and a feeding deviceengagingdirectly with said ribbon and mounted on said I bail. j

2. Ina front strike typewriting machine, the combination of a carriage,a. platen thereon, a paper bail pivotally supported at the I front sideof the carriage and co-operative with the platen above the printingline, a vibratory inking ribbon, d supplementary inking ribbonsupported. wholly on said paper bail and having its printing portiondisposed behind the vibratory ribbon, and. a ribbon-feeding clutchmounted on said bail ribbon,

that the printing portion of said ribbon ex and engaging with the ribbonforward of its printing portion.

3. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivotally supported on said carriageandco-operative with the platen, ribbon guideson said bail whollysupporting an endless inking ribbon, and a ribbon feeding clutch mountedon said bail and operative independently of said ribbon guides.

4:. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail controlling the paper through the length of theplaten, said bail being pivotally supported on said carriage andeo-operative with the platen, ribbon guides on said bail carrying anendless ribbon, and means associated with certain only of said guidesfor maintaining a constant tension on said endless ribbon. I

5. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage and oo-operative with theplaten, and a plurality of guides carrying an endless ribbon, saidguides being supported on said bail and so disposed that the endlessribbon is rectangularly arranged.

6. In a' typewriting machine, the combination of a carriage, a platenthereon, a paper bail movably mounted on said carriage and co-operatingnormally with the platen, and ribbon guides on said bail carrying anendless ribbon, said guides being so disposed that the printing portionof said ribbon extends substantially throughout the length of theplatenand is normally opposite the printing line.

7. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail mounted on said carriage and co-operating normallywith the platen, ribbon guides on said bail carrying and endless saidguides being so disposed tends substantially throughout the length ofthe platen and is normally opposite the prlnting line, and a vibratoryribbon whose printing portion is normally below the printing point, theprinting portion of the endless ribbon being behind the printing portionof the vibratory ribbon.

8. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivotally supported on said carriage andcomprising side arms and a connecting cross rod, and ribbon guides, saidguides being four in number and disposed in pairs, a pair being mountedon each of said side arms.

said means being eifective both to tension the ribbon and also to holdthe guide out of operation.

10. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivotally supported on said carriage andcomprising side arms and a connecting cross rod, ribbon guides for anendless ribbon, said guides being four in number and disposed in pairs,one pair being mounted on each of said side arms, one of said guidesbeing carried by an arm pivoted to the associate bail arm, and springmeans associated with said pivoted arm for imparting tension to theribbon guide carried thereby.

11. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivotally supported on said carriage, ribbonguides for an endless ribbon, one of said guides'being carried by an armpivoted to the associate bail, spring means associated with said pivotedarm for imparting tension to the ribbon guide carried thereby, anddetent devices associated with said pivoted arm, said spring meansrendering said devices efi'ective.

I2. I11 a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivotally supported on said earriage andeon'iprising side arms and a connecting cross rod, pairs of ribbonguides for an endless ribbon mounted on said side arms, one of saidguides being carried by an arm pivoted to the associate bail arm, springmeans associated with said pivoted arm for imparting tension to theribbon guide carried thereby, and detent devices associated with saidpivoted arm for maintaining'it in inoperative position in opposition tosaid spring means.

13. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage and carrying a ribbonco-operative with the platen,

and a second paper bail mounted on the first recited paper bail.

14. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage and carrying a ribbonco-operative with the platen, and a supplementary paper bail mounted onthe first recited paper bail, said bails being movable into and out ofcontactive engagement with the platen independently of each other. v

15'. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage and carrying a ribbonco-operative with the platen, and a second paper bail mounted on thefirst recited paper bail, said first recited bail being movable out ofengagement with the platen to render the ribbon inoperative withoutdisturbing the second paper bail.

16. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage and carrying a ribbonco-operative with the platen, a second paper bail pivoted on the firstrecited paper bail, and spring means connecting the two bails.

17. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said'carriage and carrying a ribbonco-operative with the platen, said bail comprising side arms, a secondbail pivoted to said side arms and co-operative with the platen abovethe first recited bail, and a spring connecting the two bails, .saidfirst recited bail being releasable independently of the second bail.

18. bination of a carriage, a platen thereon, a paper bail ivoted onsaid carriage and carrying a ribbon co-operative with the platen, saidbail comprising side arms, a supplementary bail pivoted to said sidearms and co-operative with the platen above the first recited bail, saidfirst recited bail being movable independently of the supplementary bailto render the ribbon inoperative, and means for enabling the firstrecited bail when given an additionalmovement to automatically releasethe supplementary ba1l.

19. In a typewriting machine, .the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage and carrying a rib onco-operative with the platen, said bail comprising side arms and arollcarrying cross bar, a supplementary bail comprising a roll-carryingcross bar and also comprising side arms which are pivoted to the sidearms of said first recited bail, sald first recited bail being movableto render the ribbon inoperative without disturbing the supplementarybail, and means on said first recited bail efi'ective when itis movedfurther to automatically throw ed the supplementary bail. v

20. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail mounted on said carriage and co-operating with theplaten to control paper, and a second paper bail comprising a rigidU-shaped frame having parallel side arms pivoted near their ends on thefirst named paper bail, said second bail also c0- operating with theplaten.

21. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriageQand a second paper bailmounted on the first named paper bail, said second bail comprising aU-shaped frame having parallel side arms pivoted directly to the sidearms of ,the first bail, said bails being releasable 1ndependently ofeach other.

22. In a typewriting machine, the combination of a carriage, a platenthereon, a

In a typewriting machine, the compaper bail mounted on said carriage, asecond paper bail mounted on the first named paper bail, said bailsbeing releasable independently of each other, and means on one of saidbails for automatically releasing the other bail.

23. In a typewriting machine, the combination of a carriage, a platenthereon, a paper bail pivoted on said carriage, a second paper bailpivoted on the first named paper bail, said bails being releasableindependently of each other, and a pin on said first recited bailefi'ectiveautomatically to release the second bail.

24. In a typewriting machine, the combination of a carriage, a platenthereon, a

paper bail pivoted on said carriage, a second paper bail pivoted on thefirst named paper bail, said bails being releasably independently ofeach other, and ribbon guides on one of v,said bails for whollysupporting an endless ribbon.

' 25. In a typewriting machine, the combination of a platen carriage, aplaten thereon, a frame movably mounted on said carriage, ribbon guideson said frame, a projection on said frame, a releasable cam member withwhich said projection co-operates to move said frame andsaid ribbonguides, said cam member being mounted on a relatively stationary part,spring means tending constantly to maintain said cam member in effectiveposition, and a key for at will rendering said cam member ineffective;

26, In a typewriting machine, the combination of a platen carriage, aplaten thereon, a frame movably mounted on said carriage, ribbon guideson said frame, a projection on said frame, a cam plate hinged to arelatively stationary part, and spring means for maintaining said camplate in operative position, said projection co-operating with said camplate during the travel of the carriage in one direction to move saidframe and ribbon guides relatively to the printing point, saidprojection acting during'traveling movements of the carriage in theopposite direction to swing said cam plate automatically to inoperativeposition.

27. In a typewriting machine, the combination of a platen carriage, aplaten thereon, a frame movably mounted on said car riage, ribbon guideson said frame for maintaining a ribbon constantly opposite the printingpoint on the platen, a projection on said frame, a cam plate hinged to arelatively stationary part, spring means for maintaining said cam platein operative position, said projection during traveling movements -ofthe carriage in one direction co-acting with one edge of said plate torock the frame and render the ribbon inoperative, the cam of the frame,said projection during return movements of the carriage acting on theface 1 plate remaining rigid during such rocking of said plate todepress it and render it ineffective to rock said frame.

28. In a typewriting machine, the combination of a platen carriage, aplaten thereon, a ribbon guiding frame movably mounted on said platencarriage, an engaging device for said frame, a spring mounted cam platewith which said device co-operates during the carriage travel, and a keyfor throwing said cam plate out of operative position at will.

29. In a typewriting machine, the combination of a platen carriage, aplaten there on, a ribbon guiding frame movably mounted on said platencarriage, an engaging device for said frame, a spring mounted cam platewith which said device co-operates during the carriage travel, and a keyfor throwing said cam plate out of operative position at will, said keyand said device being maintained so that they are always in the samenormal relative positions.

30. In a front strike typewriting machine, the combination of acarriage, a platen thereon, a frame movably mounted on said carriage andsupporting a ribbon opposite the printing point said frame maintainingthe ribbon extending substantially the full length of the platen andtending to cause the printing portion to lie in a plane inclined to thevertical, and guide fingers for confining the printing. portion of theribbon to a predetermined position substantially vertical ,to theprinting point, said guide fingers being releasable without alfectingthe ribbon supporting frame.

31. In a front strike typewriting machine, the combination of acarriage, a platen there- .on, a ribbon supportingframe carrying anendless ribbon, said frame extending rearward from the front barof thecarriage and inclining downward, the printing portion of the ribbonextending substantially the full length of the platen and tending to liein a plane inclined to the vertical, and spring pressed guide fingersco-operative with sa1d printing portion of the ribbon-to cause it toconform substantially to the printing face of the platen.

32. In a typewriting machine, the combination of a carriage, a platenthereon, ribbon supporting devices, a guide for the printing ply of theribbon, detent devices for said guide, and spring means efiective bothto maintain said guide in spring pressed engagement with the ribbon andalso to render the detent devices effective when the guide is moved toinoperative pos1t1on.

33. In a typewriting machine, the combination of a carriage,.a platenthereon, ribbon supporting devices for a carriage carried ribbon,pivoted guide fingers co-operative with the printing portion of saidribbon' to maintain it in printing position,

springs for rendering said guide fingers effective, and detent devicesco-active with said fingers to maintain them in inoperative positionwhen they are swung" away from the platen, said springs acting also torender said detent devices effective. 4

34. In a typewriting machine, the combination of a platen, ribbonguidingfingers, a rod on which the are mounted, springs coiled on saidrod for holding said fingers against the ribbon, and detents on said rodfor holding said fingers out of use when swung away from the platen,said springs also acting-on said detents.

35. In a typewriting machine, the combination of a traveling carriage, aplaten, a carriage-carried ribbon, means for feeding said ribbon, and aplurality of means for actuating the means for feeding said ribbon, eachof said plurality of means operating automatically.

36. In a typewriting machine, the combination of a traveling carriage, aplaten, a carriage-carriedribbon, means for feeding said ribbon, and aplurality of means for actuating the means for feeding said ribbon, eachof said plurality of means operating automatically, one of said meansbeing hand operated and one being power operated.

37. In a typewriting machine, the combination of a traveling carriage, aplaten, a

carriage-carried ribbon, a ribbon feeding clutch device, pawl andratchet devices for line spacing sa1d platen, and a plurality of meansfor actuating both of said ribbon feeding and li'nespacing devices, oneof said means being hand operated and the other being power operated.

38. In a typewriting machine, the combination of a carriage, a platenthereon, a carriage-carried ribbon, a ratchet wheel connected to theplaten, a co-operating pawl, a bell crank connected to said pawl, and aluralit of means for actuating said ell cran one of said means beinghand actuated and the other being power operated,

both of said means being effective to feed said ribbon.

39. In a typewriting nation of a carriage, a platen, a carriagecarriedribbon, means for line spacing said said jaws co-operating to engage theribbon and feed it when said slide is actuated one direction.

41. In a typewriting machine, the combination of a carriage, a platen, acarriage-.

carried ribbpn, means for'line spacing said machine, the combicarriedribbon, means for line spacing said platen, a slide connected to saidline spacng means, a rigid jaw on said slide and a.

pivoted co-acting jaw also on said slide and constantly spring-pressedinto engagement with said rigid aw, said jaws co-acting operatively onlyduring movement of said slide in one direction.

43. In a typewriting machine, the combination of a carriage, a platen, acarriagecarried ribbon, means for line spacing said platen comprising" ahand operated rock shaft, a crank arm on said rock shaft, a linkconnected to said crank arm, a slidable plate mounted on said carriageand connected with said link, and co-acting jaws on said slide betweenwhich one of the plies of the ribbon passes. 44. In a typewritingmachine, the combination of a carria e, a platen, ribbon guides for anendless rib on mounted on said carthereto, and co-acting jaws on saidslide be ,tween which the forward ply of the ribbon passes, said jawsco-operating to clamp the ribbon and feed it when the slide is moved inone direction, the jaws sliding inoperatively over said ply duringreturnmovement of said slide.

45. Ina writing'machine, the combination of a carriage, a platen, ribbonguides for an endless ribbon mounted on said carriage, said guides beingso arranged that the rib bon is disposed in two long arallel lies one ofwhich is contiguous an longitu 'nal of the platen and the other of whichis forward of the first ply, and feeding means for the ribbon thatcontacts. directly with the forward ply.

46. In a writing machine, the combina tion of a carriage, a platen,ribbon guides for an endless ribbon mounted on said carriage, saidguides being so arranged that the ribbon is disposed in two longparallel plies, one of which is contiguous and longitudinal of theplaten and the other of which is forward of the first ply and feedingmeans including an engaging device on the carriage for operativelyengaging the forward ply and moving it 1n lengthwise direction.

417. In a writing machine, the combination of a carriage, a laten, abail mounted on said carriage, rib on uides for an endless ribbonmounted on said bail and so disposed that the ribbon extends in two longlies lengthwise of the platen, and ribbon eeding means comprising adevice mounted on sziid bail and directly engaging one of said p ms.

48. In a writing machine, the combination of a carriage, a platen, abail comprising a rock shaft mounted on said carriage, ribbon guides foran endless ribbon mounted on saidbail and so disposed that the ribbonextends in two long plies lengthwise of the platen, and a feed slidemounted on said rock shaft and engaging one of said plies.

49. In a writing machine, the combination of a platen, a carriagetherefor, a bail comprising a rock shaft mounted on said carriage,ribbon guides for an endless ribbon mounted on said bail and so dis osedthat the ribbon extends in two plies engthwise of the platen, and a feedslide mounted on said rock shaft and engagingone of said plies, saidslide maintaining its relationship with the ribbon plies when said bailisv rocked.

Si ned at borough of Manhattan, city of .ew York, in the county of NewYork,

and State of New York, this 7th day of August, A. D. 1925.

FREDERICK A. HART.

